Cook-stove.



C. D. MCCORMACK.

COOK STOVE.

v APPLICATION FILED MM. 1, I916.

Patented June 12, 1917.

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. COY nfivreconlvmcx, or WAYNOKA, OKLAHOMA.

COOK-STOVE.

Specification of Letters Patent. Patented June fig, 191?.

' A pIicationfiIedMarcIi 1, 191 c. seam... 81,479.

b all whom it may concern:

Be it known that I, Cox D. MCCORMAOK, a citizen of the United States, residing at VVaynoka, in the county of Woods and State of Oklahoma, have invented certain new and useful Improvements in Cook-Stoves; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The primary object of this invention is to improve the construction of cook stoves by admitting of the heated gasesissuing from the fire box of the stove being circulated around the opposite end wallsand the top, bottom and back walls, when desired, or only around the opposite end walls and the bottom andrear walls of the oven.

Another object of this invention is to provide a cook stove having an oven therein and a plurality of communicating flues encircling the exterior of the oven for the passage of the gases from the fire box of the stove, the said stove being of such construction as to admit of the expeditious and convenient removal of soot or other matter from the fines.

A further object of'the invention is to provide a cook stove of such construction that the relative distance between the fire box and the bottom flue is such that cooling of the gases during passage from the fire box to the bottom flue, will be largely prevented. r

A still further object of the invention is to associate with the fire box a removable water heater, which will also serve as a back for the fire box and support the lining plate at the rear of the fire box.

A still further object of the invention is to provide a novel type of cook stove that will reduce fuel consumption and can readily admit of coal' or liquid or gaseous fuel being employed for heating the/same.

A still further object of'the invention is to provide a stove for carrying out the above objects, that will be of simple construction, cheap to manufacture, and will be durable and efficient in operation.

Other objects will appear and be better understood from that embodiment of my in vention of which the following is a specification, reference being had to the accompany ing drawings forming a part thereof, in which:

Figure 1 is a vertical sectional elevation of the stove, showing the inner surface of the back side thereof,

Fig. 2 is a vertical section taken on the l1ne 22 of Fig. 1,

Flg. 3 is a vertical section taken on the line 3-8 of Fig. 1, looking in the direction of she front of the forward end of the stove, an 4 Fig. 4 is a perspective view of the stove, showing the back side thereof.

' F 5 is a modification, showing the stove converted from a coal burning stove into a liquid or gaseous fuel burning stove.

Referring to the drawings in detail, the letter A designates the cook stove as an en tirety, and which has the forward end thereof provided with the inner vertical partition 1, arranged in spaced relation with the forward end wall of the stove A to provide the ash pit 2. The upper end of the partition 1 terminates at a point approximately half the height of the stove casing and lies flush with the frame 3, which extends around the inner surface of the front and sides of the stove casing and forms with the same a support for the grate 4:. The stove casing incloses an oven 5, which is formed of the top and bottom walls 6 and 7 and the opposite end walls 8 and the back wall 9, the wall 8 having its upper end extended above the top wall 6 of the oven and secured to the top wall of the stove casing, as shown in Fig. 1 of the drawings. The top and bottom walls of the oven are secured to the forward wall of the stove casing, in any suitable manner, and the forward side of the oven is normally closed by means of a door 10 mounted in an opening formed in the side of the stove casing, as shown in Fig. 3 of the drawings. The lower side of the oven rests on an L- shaped support 11, the long arm, of which extends beneath the back edge of the lower side of the oven throughout the length thereof, and the short arm of the L-shaped support extends beneath the rearendof the lower side of the oven for a distance approximately half the width of the lower side. i

The front, rear, top and bottom walls of the oven are spaced, respectively, from the vertical partition and the top, bottom and rear end walls of the stove casing so as to provide the opposite end flues 12 and 13 and the top and bottom flues 14 and 15, for the passage of the heated gases from the fire box around the mentioned sides of the oven. By virtue of extending the short arm of the L-shaped support 11 for a distance approximately half the width of the lower wall of the oven, the heated gases in passing from the bottom flue 15 into the rear end flue 13, will have to travel toward the forward end of the oven before the same enter the rear end flue 13.

The back side of the stove casing is provided with a back flue 16, which is oflset from the back side of the stove casing and is defined by the back wall 17 the end wall 18, the rear end wall of the stove casing and an offset ledge 19 formed on the top of the stove casing. The ledge 19 carried by the top of the stove casing is provided with an opening 20 for the passage of one end of a stove pipe 21, the said end of the stove pipe extending downwardly to a point almost adjacent the lower wall of the back flue 16, as shown in Fig. 4 of the drawings. By extending the inner end of the pipe 21 downwardly into the back flue, a much better draft will be obtained so as to insure the passage of the heated gases downwardly in the back flue of the oven before passing out through the pipe 21.

The upper end of the back wall 9 has an opening formed therein so as to estabhsh communication between the back flue 16 and the top flue 14, and communication between the top and back flues is controlled by means of a damper 22. The damper 22 is located at the point of communication between the top and back flues 14 and 16. When the damper 22 is in closed position, shown in Fig. 1, the gases from the fire box will pass over the top of the oven in the flue 14, pass downwardly through the front flue 12, through the bottom flue 15 and the rear end flue 13 to the back flue 16. When the damper is moved to the dotted line or open position, a portion of the gases will pass over the top of the oven or through the top flue into the back flue 16 and heat the top wall of the oven and also increase the draft. The damper 22 is designed to be operated by a lever 23 which is operated through an opening in the ledge 19, as shown in Fig. 4.

The rear edge of the ledge 19 is provided at the point of communication between the back and rear end flues with an opening 24 by means of which a suitable tool, not shown, can be inserted so as to admit of the soot collected in one flue being moved into the adjacent flue, as desired. The end wall 18 for the back flue 16 is provided, at its lower end, with a door 25 through which the collected material, if moved into the back flue, can be removed therefrom. The front wall of the stove casing is provided at a point below the oven door with an opening closed by means of a door 26, and through which opening access can be had to clean the lower and the rear end flues 13 and 15.

Positioned within the fire box end of the stove is a back piece, designated as entirety by the letter B. If desired the back piece can include a detachable water tank 27, which rests on the grate and has the opposite ends of the lower wall provided with depending ears 28, which extend through slots in the frame 3 and are apertured for the reception of bolts 29 which extend through the front and rear walls of the stove casing and are held from displacement by means of cotter pins 31. An inlet pipe 32, which is arranged in communication with a suitable water supply, extends through the rear wall of the stove casing and communicates with the interior of the tank, so as to keep the tank filled with water, and outlet pipes 32 and 32 extend through the back and front side walls of the stove casing and communicate with the interior of the tank, as shown in Fig. 2 of the drawings. The water tank forms a back for the fire box and the base of the tank is provided with the flanges 33 upon which rest the lower edges of the protector or lining plates 34 and 35, the upper edges of which rest against flanges 36 formed upon the upper side of the tank and serve to hold the plates spaced from the sides of the tank so as to provide air spaces. The plate 35 has its upper edge curved, as shown at 37, and engaged over the top of the tank and over the upper edge of the other protector plate, as shown in Fig. 1. When the damper 22 is in closed position the heated gases from the fire box will pass over the tank 27, over the top of the oven, in the flue 14 and downward through the flue 12, through the bottom flue 15, to the rear end flue 13, thence to the rear flue 16 and out through the stovepipe 21. When it is desired to have a portion of the gases pass over the top of the oven and down around the back wall of the oven, the damper 22 is moved to open position so as not to obstruct the passage from the top flue 14 to the back flue 16, so as to admit of the gases passing down the back flue to the pipe 21.

In the modification shown in Fig. 5 the back piece is not employed as a water heater and can be placed as shown at the front of the fire box, so that a liquid fuel burner 38 can be placed within the fire box and near the flue 12 when it is desired to convert the stove from a coal burning stove to a liquid fuel burning stove.

From the foregoing description, taken in connection with the accompanying drawings the advantages of construction and of the method of operation of the improved cook stove will be readily ap arent to those skilled in the art to whic this invention 13 appertains, and while in the foregoing description, the principle of the operation of this invention has been described together with various features of construction, it is to be understood that certain minor features of construction, combination and arrangement of parts may be altered to suit practical conditions provided such alterations are comprehended within the scope of what is claimed.

Having thus described my invention what I claim as new, is:

In a stove, the combination with the fire boX and a grate therein, of an elongated 110llow body positioned within the fire box and resting on the grate and forming the rear wall of the fire box, longitudinally extending flanges located at the lower edges of the side walls of the body, protector plates mounted on the flanges and arranged in spaced relation with the side walls of the body, one of the protector plates having its upper edge curved downwardly and engaging over the upper edges of the body and the other protector plate.

In testimony whereof I afiix my signature in presence of two witnesses.

OOY D. MOOORMACK.

Witnesses:

A. M. WEBB, J. GLENN GREGORY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of I'atents,

' Washington, D. G. 

